273 
plants ; or should the heat of the bed become 
violent, this method jjrevents any danger of the 
plants being scalded, owing to the flue being 
open at each end, to let out the steam, which 
w'ould otherwise be confined, and scald the roots. 
At the same time, to prevent the top heat being 
too strong for the plant at so early a state of the 
bed, it will be necessary to allow it to escape a 
little both night and day out of the frame, as long 
as the heat remains in that state, by tilting the 
high end of the sashes, more or less, as it is 
thought necessary, only it must be observed to 
keep out the sharp air, by hanging* garden mats, 
or any thing similar, over the part open. When 
the bed is not too hot, the flue may be closed up 
at each end with earth. 
The next important object this method eflfects 
is, that it will prevent the 2)rincipal roots pene- 
trating the bed too deejj, and also hinder stag'- 
nant wet from lodging about the bottom of the 
stem to which the principal roots are united, 
which is too often found to be the case when 
watering is not judiciously applied, and proves 
injurious to the plant. It will be projier, in the 
next place, to lay over the remaining surface 
of manui'e, about two inches in thickness of 
wheat, oat, or other straw. This will admit of 
the heat rising properly, and at the same be a 
great prevention against too much wet lodging 
about the roots. When this is done, the earth to 
